Steam-engine cylinder-head.



W'. L. REID. STEAM ENGINE CYLINDER HEAD.

ABPLIOATIQN FILED APR.19, 1913. I

Patented July 1, 1913.

VTILLIAM L. REID, OF SCI-IENEGTADY, NEW YORK.

STEAM-ENGINE CYLINDER-HEAD.

Specification of Letters Patent.

Application filed April 19, 1913. Serial No. 762,166.

'7 '0 all whom it may concern:

Be it known that I, WILLIAM L. REID, of Schenectady, in the county ofSchenectady and State of New York, have invented a certain new anduseful Improvement in Steam-Engine Cylinder-Heads, of which improvementthe following is a specification.

My invention more particularly relates to the back heads of locomotiveengine cylinders, and its object is to provide a cylinder head of strongand simple construction, in the manufacture of which, reduction of costwill be effected by the avoidance of the necessity of changing patterns,or making new ones, for cylinders of difierent diameters; by thecapability of using a standard stuffing box for heads of varyingdiameters; by exemption from loss of castings by blow holes frequentlyformed in those of the present forms; and by reduction of weight andeconomy of production, attained by pressing the major portion of thehead, in quantities, fro-m wrought metal, and fitting the pressed blankswith any specific form of stuffing box and guide supporting lugs thatmay be desired or specified for particular designs of locomotives.

The improvement claimed is hereinafter fully set forth.

In the accompanying drawing: Figure 1 is a vertical central sectionthrough'a locomotive cylinder head embodying my invention; Fig. 2, atransverse section, the upper half being taken on the line 00 w of Fig.1, and the lower half on the line y y of the same figure; and Fig. 3, asimilar section on the line a a of Figs. 1 and 2.

In the practice of my invention, I provide a head for a locomotiveengine cylinder, A, comprising a circular main cover plate sec tion, 1,which is dished or depressed toward its inner side throughout a diameterless than the bore of the cylinder to which it is to be attached, and issecured, adjacent to its periphery, to the cylinder, by a plurality ofstuds, 1, tapped into the ordinary flange, a, on the rear end of thecylinder, and a supplemental stuffing box and guide support section,indicated, as an entirety, by the numeral, 2, fitting steam tight, atits inner end, in a central opening in the main cover plate section, 1,and secured thereto, by a plurality of bolts, 2 passing through acircular bolting flange, 2*, cast on the section, 2, adjoining the fitthereof in the section, 1. For the purpose of reducing weight and costof manufacture, the main cover plate section, 1, is preferably made ofwrought boiler sheet plate, pressed into proper form, but it may, ifpreferred, be a steel or iron casting. It is bored out centrally toreceive the inner end of the section, 2, and faced 06 on its inner side,adjacent to its rim, to make a tight joint with the end of the cylinder.

The central portion ofthe stufiing box and guide support section, 2, isof tubular form, surrounding the piston rod, B, which passes freelythrough its inner end, its bore being such as is proper to receive thepacking which is inserted, in the ordinary manner, tomaintain a steamtight joint with the piston rod. A circular plate, 2, is cast on theouter end of the section, 2, said plate terially increased in thicknessbetween the guide support lugs and the central stuffing box portion ofthe section, 2, throughout the width of the lugs, and an annular casingplate, 5, is fitted around the rim, 2 and around the main cover platesection, 1, and the adjacent portion of the cylinder flange, a. Thespace surroundingthe stuffing box, between the section, 1, and theplate, 2, of the section, 2, is fitted with any suitable non- PatentedJui i, 1913;

conducting material, as a body of plaster,

6, indicated by the conventional representation of such material inFigs. 1 and 3.

It will be seen that by the provision of an independent main coverplate. section as herein set forth, the loss of the entire headstructure, and of labor put on it in finishing it, when defects, such asblow holes, are developed in the casting, and when these are notdiscovered until after work has been done, which very frequently occursin locomotive works, are fully obviated, and the advantages of using asingle stuffing box pattern for heads of different diameters, and ofeconomizing in weight and cost by pressing the main cover plate sectionsfrom wrought metal plates, in quantities, will be appreciated by thoseskilled in this department of locomotive engine manufacture.

I claim as my invention and desire to secure by Letters Patent:

1. In a steam engine cylinder head, the combination of a main coverplate section having a central opening, a section comprising a stuflingbox fitting in said opening and an integral plate having a guide supportlug, and bolts securing said section to the main cover plate section.

2. In a steam engine cylinder head, the combination of a pressed metalmain cover plate section having a central opening, a cast metal sectioncomprising a stufling box fitting in said opening and an integral platehaving a guide support lug, and bolts securing said section to the maincover plate section. i

3. In a steam engine cylinder head, the combination of a main coverplate section having a central opening, a section comprising a stuffingbox fitting in said opening, and an integral plate having an annular rimand a guide support lug, an annular casing plate fitting over said rim,and bolts securing said section to the main cover plate section.

4:. In a steam engine cylinder head, the

combination of a main cover plate section having a central opening, asection comprising a stufling boX fitting in said opening and anintegral plate having an annular rim and a guide support lug, an annularcasing plate fitting over said rim, bolts securing the stufling box andguide support section to the main cover plate section, and a filling ofnon-conducting material inclosed Within the casing plate.

5. In a steam engine cylinder head, the combination of a main coverplate section having a central opening, a section comprising a stufiingbox fitting in said opening, a bolting flange adjacent to its inner endabutting on the main cover plate section, and a plate on its oppositeend having a guide support lug, said plate being reinforced in thicknessbetween the lug and the stuffing box, and a plurality of bolts passingthrough, and securing together, the bolting flange and the main coverplate section.

WILLIAM L. REID.

WVitnesses J. D. FINN, J. R. MAYANCY.

Copies of this patent may be obtained for five cents each, by arldressing the Commissioner of Patents,

Washington, D, C.

